diff options
Diffstat (limited to 'drivers/power/supply/bq24190_charger.c')
| -rw-r--r-- | drivers/power/supply/bq24190_charger.c | 2051 |
1 files changed, 2051 insertions, 0 deletions
diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c new file mode 100644 index 000000000..0d3db227b --- /dev/null +++ b/drivers/power/supply/bq24190_charger.c @@ -0,0 +1,2051 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Driver for the TI bq24190 battery charger. + * + * Author: Mark A. Greer <mgreer@animalcreek.com> + */ + +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/pm_runtime.h> +#include <linux/power_supply.h> +#include <linux/power/bq24190_charger.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/workqueue.h> +#include <linux/i2c.h> +#include <linux/extcon-provider.h> + +#define BQ24190_MANUFACTURER "Texas Instruments" + +#define BQ24190_REG_ISC 0x00 /* Input Source Control */ +#define BQ24190_REG_ISC_EN_HIZ_MASK BIT(7) +#define BQ24190_REG_ISC_EN_HIZ_SHIFT 7 +#define BQ24190_REG_ISC_VINDPM_MASK (BIT(6) | BIT(5) | BIT(4) | \ + BIT(3)) +#define BQ24190_REG_ISC_VINDPM_SHIFT 3 +#define BQ24190_REG_ISC_IINLIM_MASK (BIT(2) | BIT(1) | BIT(0)) +#define BQ24190_REG_ISC_IINLIM_SHIFT 0 + +#define BQ24190_REG_POC 0x01 /* Power-On Configuration */ +#define BQ24190_REG_POC_RESET_MASK BIT(7) +#define BQ24190_REG_POC_RESET_SHIFT 7 +#define BQ24190_REG_POC_WDT_RESET_MASK BIT(6) +#define BQ24190_REG_POC_WDT_RESET_SHIFT 6 +#define BQ24190_REG_POC_CHG_CONFIG_MASK (BIT(5) | BIT(4)) +#define BQ24190_REG_POC_CHG_CONFIG_SHIFT 4 +#define BQ24190_REG_POC_CHG_CONFIG_DISABLE 0x0 +#define BQ24190_REG_POC_CHG_CONFIG_CHARGE 0x1 +#define BQ24190_REG_POC_CHG_CONFIG_OTG 0x2 +#define BQ24190_REG_POC_CHG_CONFIG_OTG_ALT 0x3 +#define BQ24190_REG_POC_SYS_MIN_MASK (BIT(3) | BIT(2) | BIT(1)) +#define BQ24190_REG_POC_SYS_MIN_SHIFT 1 +#define BQ24190_REG_POC_SYS_MIN_MIN 3000 +#define BQ24190_REG_POC_SYS_MIN_MAX 3700 +#define BQ24190_REG_POC_BOOST_LIM_MASK BIT(0) +#define BQ24190_REG_POC_BOOST_LIM_SHIFT 0 + +#define BQ24190_REG_CCC 0x02 /* Charge Current Control */ +#define BQ24190_REG_CCC_ICHG_MASK (BIT(7) | BIT(6) | BIT(5) | \ + BIT(4) | BIT(3) | BIT(2)) +#define BQ24190_REG_CCC_ICHG_SHIFT 2 +#define BQ24190_REG_CCC_FORCE_20PCT_MASK BIT(0) +#define BQ24190_REG_CCC_FORCE_20PCT_SHIFT 0 + +#define BQ24190_REG_PCTCC 0x03 /* Pre-charge/Termination Current Cntl */ +#define BQ24190_REG_PCTCC_IPRECHG_MASK (BIT(7) | BIT(6) | BIT(5) | \ + BIT(4)) +#define BQ24190_REG_PCTCC_IPRECHG_SHIFT 4 +#define BQ24190_REG_PCTCC_IPRECHG_MIN 128 +#define BQ24190_REG_PCTCC_IPRECHG_MAX 2048 +#define BQ24190_REG_PCTCC_ITERM_MASK (BIT(3) | BIT(2) | BIT(1) | \ + BIT(0)) +#define BQ24190_REG_PCTCC_ITERM_SHIFT 0 +#define BQ24190_REG_PCTCC_ITERM_MIN 128 +#define BQ24190_REG_PCTCC_ITERM_MAX 2048 + +#define BQ24190_REG_CVC 0x04 /* Charge Voltage Control */ +#define BQ24190_REG_CVC_VREG_MASK (BIT(7) | BIT(6) | BIT(5) | \ + BIT(4) | BIT(3) | BIT(2)) +#define BQ24190_REG_CVC_VREG_SHIFT 2 +#define BQ24190_REG_CVC_BATLOWV_MASK BIT(1) +#define BQ24190_REG_CVC_BATLOWV_SHIFT 1 +#define BQ24190_REG_CVC_VRECHG_MASK BIT(0) +#define BQ24190_REG_CVC_VRECHG_SHIFT 0 + +#define BQ24190_REG_CTTC 0x05 /* Charge Term/Timer Control */ +#define BQ24190_REG_CTTC_EN_TERM_MASK BIT(7) +#define BQ24190_REG_CTTC_EN_TERM_SHIFT 7 +#define BQ24190_REG_CTTC_TERM_STAT_MASK BIT(6) +#define BQ24190_REG_CTTC_TERM_STAT_SHIFT 6 +#define BQ24190_REG_CTTC_WATCHDOG_MASK (BIT(5) | BIT(4)) +#define BQ24190_REG_CTTC_WATCHDOG_SHIFT 4 +#define BQ24190_REG_CTTC_EN_TIMER_MASK BIT(3) +#define BQ24190_REG_CTTC_EN_TIMER_SHIFT 3 +#define BQ24190_REG_CTTC_CHG_TIMER_MASK (BIT(2) | BIT(1)) +#define BQ24190_REG_CTTC_CHG_TIMER_SHIFT 1 +#define BQ24190_REG_CTTC_JEITA_ISET_MASK BIT(0) +#define BQ24190_REG_CTTC_JEITA_ISET_SHIFT 0 + +#define BQ24190_REG_ICTRC 0x06 /* IR Comp/Thermal Regulation Control */ +#define BQ24190_REG_ICTRC_BAT_COMP_MASK (BIT(7) | BIT(6) | BIT(5)) +#define BQ24190_REG_ICTRC_BAT_COMP_SHIFT 5 +#define BQ24190_REG_ICTRC_VCLAMP_MASK (BIT(4) | BIT(3) | BIT(2)) +#define BQ24190_REG_ICTRC_VCLAMP_SHIFT 2 +#define BQ24190_REG_ICTRC_TREG_MASK (BIT(1) | BIT(0)) +#define BQ24190_REG_ICTRC_TREG_SHIFT 0 + +#define BQ24190_REG_MOC 0x07 /* Misc. Operation Control */ +#define BQ24190_REG_MOC_DPDM_EN_MASK BIT(7) +#define BQ24190_REG_MOC_DPDM_EN_SHIFT 7 +#define BQ24190_REG_MOC_TMR2X_EN_MASK BIT(6) +#define BQ24190_REG_MOC_TMR2X_EN_SHIFT 6 +#define BQ24190_REG_MOC_BATFET_DISABLE_MASK BIT(5) +#define BQ24190_REG_MOC_BATFET_DISABLE_SHIFT 5 +#define BQ24190_REG_MOC_JEITA_VSET_MASK BIT(4) +#define BQ24190_REG_MOC_JEITA_VSET_SHIFT 4 +#define BQ24190_REG_MOC_INT_MASK_MASK (BIT(1) | BIT(0)) +#define BQ24190_REG_MOC_INT_MASK_SHIFT 0 + +#define BQ24190_REG_SS 0x08 /* System Status */ +#define BQ24190_REG_SS_VBUS_STAT_MASK (BIT(7) | BIT(6)) +#define BQ24190_REG_SS_VBUS_STAT_SHIFT 6 +#define BQ24190_REG_SS_CHRG_STAT_MASK (BIT(5) | BIT(4)) +#define BQ24190_REG_SS_CHRG_STAT_SHIFT 4 +#define BQ24190_REG_SS_DPM_STAT_MASK BIT(3) +#define BQ24190_REG_SS_DPM_STAT_SHIFT 3 +#define BQ24190_REG_SS_PG_STAT_MASK BIT(2) +#define BQ24190_REG_SS_PG_STAT_SHIFT 2 +#define BQ24190_REG_SS_THERM_STAT_MASK BIT(1) +#define BQ24190_REG_SS_THERM_STAT_SHIFT 1 +#define BQ24190_REG_SS_VSYS_STAT_MASK BIT(0) +#define BQ24190_REG_SS_VSYS_STAT_SHIFT 0 + +#define BQ24190_REG_F 0x09 /* Fault */ +#define BQ24190_REG_F_WATCHDOG_FAULT_MASK BIT(7) +#define BQ24190_REG_F_WATCHDOG_FAULT_SHIFT 7 +#define BQ24190_REG_F_BOOST_FAULT_MASK BIT(6) +#define BQ24190_REG_F_BOOST_FAULT_SHIFT 6 +#define BQ24190_REG_F_CHRG_FAULT_MASK (BIT(5) | BIT(4)) +#define BQ24190_REG_F_CHRG_FAULT_SHIFT 4 +#define BQ24190_REG_F_BAT_FAULT_MASK BIT(3) +#define BQ24190_REG_F_BAT_FAULT_SHIFT 3 +#define BQ24190_REG_F_NTC_FAULT_MASK (BIT(2) | BIT(1) | BIT(0)) +#define BQ24190_REG_F_NTC_FAULT_SHIFT 0 + +#define BQ24190_REG_VPRS 0x0A /* Vendor/Part/Revision Status */ +#define BQ24190_REG_VPRS_PN_MASK (BIT(5) | BIT(4) | BIT(3)) +#define BQ24190_REG_VPRS_PN_SHIFT 3 +#define BQ24190_REG_VPRS_PN_24190 0x4 +#define BQ24190_REG_VPRS_PN_24192 0x5 /* Also 24193, 24196 */ +#define BQ24190_REG_VPRS_PN_24192I 0x3 +#define BQ24190_REG_VPRS_TS_PROFILE_MASK BIT(2) +#define BQ24190_REG_VPRS_TS_PROFILE_SHIFT 2 +#define BQ24190_REG_VPRS_DEV_REG_MASK (BIT(1) | BIT(0)) +#define BQ24190_REG_VPRS_DEV_REG_SHIFT 0 + +/* + * The FAULT register is latched by the bq24190 (except for NTC_FAULT) + * so the first read after a fault returns the latched value and subsequent + * reads return the current value. In order to return the fault status + * to the user, have the interrupt handler save the reg's value and retrieve + * it in the appropriate health/status routine. + */ +struct bq24190_dev_info { + struct i2c_client *client; + struct device *dev; + struct extcon_dev *edev; + struct power_supply *charger; + struct power_supply *battery; + struct delayed_work input_current_limit_work; + char model_name[I2C_NAME_SIZE]; + bool initialized; + bool irq_event; + bool otg_vbus_enabled; + int charge_type; + u16 sys_min; + u16 iprechg; + u16 iterm; + u32 ichg; + u32 ichg_max; + u32 vreg; + u32 vreg_max; + struct mutex f_reg_lock; + u8 f_reg; + u8 ss_reg; + u8 watchdog; +}; + +static int bq24190_charger_set_charge_type(struct bq24190_dev_info *bdi, + const union power_supply_propval *val); + +static const unsigned int bq24190_usb_extcon_cable[] = { + EXTCON_USB, + EXTCON_NONE, +}; + +/* + * The tables below provide a 2-way mapping for the value that goes in + * the register field and the real-world value that it represents. + * The index of the array is the value that goes in the register; the + * number at that index in the array is the real-world value that it + * represents. + */ + +/* REG00[2:0] (IINLIM) in uAh */ +static const int bq24190_isc_iinlim_values[] = { + 100000, 150000, 500000, 900000, 1200000, 1500000, 2000000, 3000000 +}; + +/* REG02[7:2] (ICHG) in uAh */ +static const int bq24190_ccc_ichg_values[] = { + 512000, 576000, 640000, 704000, 768000, 832000, 896000, 960000, + 1024000, 1088000, 1152000, 1216000, 1280000, 1344000, 1408000, 1472000, + 1536000, 1600000, 1664000, 1728000, 1792000, 1856000, 1920000, 1984000, + 2048000, 2112000, 2176000, 2240000, 2304000, 2368000, 2432000, 2496000, + 2560000, 2624000, 2688000, 2752000, 2816000, 2880000, 2944000, 3008000, + 3072000, 3136000, 3200000, 3264000, 3328000, 3392000, 3456000, 3520000, + 3584000, 3648000, 3712000, 3776000, 3840000, 3904000, 3968000, 4032000, + 4096000, 4160000, 4224000, 4288000, 4352000, 4416000, 4480000, 4544000 +}; + +/* REG04[7:2] (VREG) in uV */ +static const int bq24190_cvc_vreg_values[] = { + 3504000, 3520000, 3536000, 3552000, 3568000, 3584000, 3600000, 3616000, + 3632000, 3648000, 3664000, 3680000, 3696000, 3712000, 3728000, 3744000, + 3760000, 3776000, 3792000, 3808000, 3824000, 3840000, 3856000, 3872000, + 3888000, 3904000, 3920000, 3936000, 3952000, 3968000, 3984000, 4000000, + 4016000, 4032000, 4048000, 4064000, 4080000, 4096000, 4112000, 4128000, + 4144000, 4160000, 4176000, 4192000, 4208000, 4224000, 4240000, 4256000, + 4272000, 4288000, 4304000, 4320000, 4336000, 4352000, 4368000, 4384000, + 4400000 +}; + +/* REG06[1:0] (TREG) in tenths of degrees Celsius */ +static const int bq24190_ictrc_treg_values[] = { + 600, 800, 1000, 1200 +}; + +/* + * Return the index in 'tbl' of greatest value that is less than or equal to + * 'val'. The index range returned is 0 to 'tbl_size' - 1. Assumes that + * the values in 'tbl' are sorted from smallest to largest and 'tbl_size' + * is less than 2^8. + */ +static u8 bq24190_find_idx(const int tbl[], int tbl_size, int v) +{ + int i; + + for (i = 1; i < tbl_size; i++) + if (v < tbl[i]) + break; + + return i - 1; +} + +/* Basic driver I/O routines */ + +static int bq24190_read(struct bq24190_dev_info *bdi, u8 reg, u8 *data) +{ + int ret; + + ret = i2c_smbus_read_byte_data(bdi->client, reg); + if (ret < 0) + return ret; + + *data = ret; + return 0; +} + +static int bq24190_write(struct bq24190_dev_info *bdi, u8 reg, u8 data) +{ + return i2c_smbus_write_byte_data(bdi->client, reg, data); +} + +static int bq24190_read_mask(struct bq24190_dev_info *bdi, u8 reg, + u8 mask, u8 shift, u8 *data) +{ + u8 v; + int ret; + + ret = bq24190_read(bdi, reg, &v); + if (ret < 0) + return ret; + + v &= mask; + v >>= shift; + *data = v; + + return 0; +} + +static int bq24190_write_mask(struct bq24190_dev_info *bdi, u8 reg, + u8 mask, u8 shift, u8 data) +{ + u8 v; + int ret; + + ret = bq24190_read(bdi, reg, &v); + if (ret < 0) + return ret; + + v &= ~mask; + v |= ((data << shift) & mask); + + return bq24190_write(bdi, reg, v); +} + +static int bq24190_get_field_val(struct bq24190_dev_info *bdi, + u8 reg, u8 mask, u8 shift, + const int tbl[], int tbl_size, + int *val) +{ + u8 v; + int ret; + + ret = bq24190_read_mask(bdi, reg, mask, shift, &v); + if (ret < 0) + return ret; + + v = (v >= tbl_size) ? (tbl_size - 1) : v; + *val = tbl[v]; + + return 0; +} + +static int bq24190_set_field_val(struct bq24190_dev_info *bdi, + u8 reg, u8 mask, u8 shift, + const int tbl[], int tbl_size, + int val) +{ + u8 idx; + + idx = bq24190_find_idx(tbl, tbl_size, val); + + return bq24190_write_mask(bdi, reg, mask, shift, idx); +} + +#ifdef CONFIG_SYSFS +/* + * There are a numerous options that are configurable on the bq24190 + * that go well beyond what the power_supply properties provide access to. + * Provide sysfs access to them so they can be examined and possibly modified + * on the fly. They will be provided for the charger power_supply object only + * and will be prefixed by 'f_' to make them easier to recognize. + */ + +#define BQ24190_SYSFS_FIELD(_name, r, f, m, store) \ +{ \ + .attr = __ATTR(f_##_name, m, bq24190_sysfs_show, store), \ + .reg = BQ24190_REG_##r, \ + .mask = BQ24190_REG_##r##_##f##_MASK, \ + .shift = BQ24190_REG_##r##_##f##_SHIFT, \ +} + +#define BQ24190_SYSFS_FIELD_RW(_name, r, f) \ + BQ24190_SYSFS_FIELD(_name, r, f, S_IWUSR | S_IRUGO, \ + bq24190_sysfs_store) + +#define BQ24190_SYSFS_FIELD_RO(_name, r, f) \ + BQ24190_SYSFS_FIELD(_name, r, f, S_IRUGO, NULL) + +static ssize_t bq24190_sysfs_show(struct device *dev, + struct device_attribute *attr, char *buf); +static ssize_t bq24190_sysfs_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count); + +struct bq24190_sysfs_field_info { + struct device_attribute attr; + u8 reg; + u8 mask; + u8 shift; +}; + +/* On i386 ptrace-abi.h defines SS that breaks the macro calls below. */ +#undef SS + +static struct bq24190_sysfs_field_info bq24190_sysfs_field_tbl[] = { + /* sysfs name reg field in reg */ + BQ24190_SYSFS_FIELD_RW(en_hiz, ISC, EN_HIZ), + BQ24190_SYSFS_FIELD_RW(vindpm, ISC, VINDPM), + BQ24190_SYSFS_FIELD_RW(iinlim, ISC, IINLIM), + BQ24190_SYSFS_FIELD_RW(chg_config, POC, CHG_CONFIG), + BQ24190_SYSFS_FIELD_RW(sys_min, POC, SYS_MIN), + BQ24190_SYSFS_FIELD_RW(boost_lim, POC, BOOST_LIM), + BQ24190_SYSFS_FIELD_RW(ichg, CCC, ICHG), + BQ24190_SYSFS_FIELD_RW(force_20_pct, CCC, FORCE_20PCT), + BQ24190_SYSFS_FIELD_RW(iprechg, PCTCC, IPRECHG), + BQ24190_SYSFS_FIELD_RW(iterm, PCTCC, ITERM), + BQ24190_SYSFS_FIELD_RW(vreg, CVC, VREG), + BQ24190_SYSFS_FIELD_RW(batlowv, CVC, BATLOWV), + BQ24190_SYSFS_FIELD_RW(vrechg, CVC, VRECHG), + BQ24190_SYSFS_FIELD_RW(en_term, CTTC, EN_TERM), + BQ24190_SYSFS_FIELD_RW(term_stat, CTTC, TERM_STAT), + BQ24190_SYSFS_FIELD_RO(watchdog, CTTC, WATCHDOG), + BQ24190_SYSFS_FIELD_RW(en_timer, CTTC, EN_TIMER), + BQ24190_SYSFS_FIELD_RW(chg_timer, CTTC, CHG_TIMER), + BQ24190_SYSFS_FIELD_RW(jeta_iset, CTTC, JEITA_ISET), + BQ24190_SYSFS_FIELD_RW(bat_comp, ICTRC, BAT_COMP), + BQ24190_SYSFS_FIELD_RW(vclamp, ICTRC, VCLAMP), + BQ24190_SYSFS_FIELD_RW(treg, ICTRC, TREG), + BQ24190_SYSFS_FIELD_RW(dpdm_en, MOC, DPDM_EN), + BQ24190_SYSFS_FIELD_RW(tmr2x_en, MOC, TMR2X_EN), + BQ24190_SYSFS_FIELD_RW(batfet_disable, MOC, BATFET_DISABLE), + BQ24190_SYSFS_FIELD_RW(jeita_vset, MOC, JEITA_VSET), + BQ24190_SYSFS_FIELD_RO(int_mask, MOC, INT_MASK), + BQ24190_SYSFS_FIELD_RO(vbus_stat, SS, VBUS_STAT), + BQ24190_SYSFS_FIELD_RO(chrg_stat, SS, CHRG_STAT), + BQ24190_SYSFS_FIELD_RO(dpm_stat, SS, DPM_STAT), + BQ24190_SYSFS_FIELD_RO(pg_stat, SS, PG_STAT), + BQ24190_SYSFS_FIELD_RO(therm_stat, SS, THERM_STAT), + BQ24190_SYSFS_FIELD_RO(vsys_stat, SS, VSYS_STAT), + BQ24190_SYSFS_FIELD_RO(watchdog_fault, F, WATCHDOG_FAULT), + BQ24190_SYSFS_FIELD_RO(boost_fault, F, BOOST_FAULT), + BQ24190_SYSFS_FIELD_RO(chrg_fault, F, CHRG_FAULT), + BQ24190_SYSFS_FIELD_RO(bat_fault, F, BAT_FAULT), + BQ24190_SYSFS_FIELD_RO(ntc_fault, F, NTC_FAULT), + BQ24190_SYSFS_FIELD_RO(pn, VPRS, PN), + BQ24190_SYSFS_FIELD_RO(ts_profile, VPRS, TS_PROFILE), + BQ24190_SYSFS_FIELD_RO(dev_reg, VPRS, DEV_REG), +}; + +static struct attribute * + bq24190_sysfs_attrs[ARRAY_SIZE(bq24190_sysfs_field_tbl) + 1]; + +ATTRIBUTE_GROUPS(bq24190_sysfs); + +static void bq24190_sysfs_init_attrs(void) +{ + int i, limit = ARRAY_SIZE(bq24190_sysfs_field_tbl); + + for (i = 0; i < limit; i++) + bq24190_sysfs_attrs[i] = &bq24190_sysfs_field_tbl[i].attr.attr; + + bq24190_sysfs_attrs[limit] = NULL; /* Has additional entry for this */ +} + +static struct bq24190_sysfs_field_info *bq24190_sysfs_field_lookup( + const char *name) +{ + int i, limit = ARRAY_SIZE(bq24190_sysfs_field_tbl); + + for (i = 0; i < limit; i++) + if (!strcmp(name, bq24190_sysfs_field_tbl[i].attr.attr.name)) + break; + + if (i >= limit) + return NULL; + + return &bq24190_sysfs_field_tbl[i]; +} + +static ssize_t bq24190_sysfs_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct power_supply *psy = dev_get_drvdata(dev); + struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); + struct bq24190_sysfs_field_info *info; + ssize_t count; + int ret; + u8 v; + + info = bq24190_sysfs_field_lookup(attr->attr.name); + if (!info) + return -EINVAL; + + ret = pm_runtime_resume_and_get(bdi->dev); + if (ret < 0) + return ret; + + ret = bq24190_read_mask(bdi, info->reg, info->mask, info->shift, &v); + if (ret) + count = ret; + else + count = scnprintf(buf, PAGE_SIZE, "%hhx\n", v); + + pm_runtime_mark_last_busy(bdi->dev); + pm_runtime_put_autosuspend(bdi->dev); + + return count; +} + +static ssize_t bq24190_sysfs_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct power_supply *psy = dev_get_drvdata(dev); + struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); + struct bq24190_sysfs_field_info *info; + int ret; + u8 v; + + info = bq24190_sysfs_field_lookup(attr->attr.name); + if (!info) + return -EINVAL; + + ret = kstrtou8(buf, 0, &v); + if (ret < 0) + return ret; + + ret = pm_runtime_resume_and_get(bdi->dev); + if (ret < 0) + return ret; + + ret = bq24190_write_mask(bdi, info->reg, info->mask, info->shift, v); + if (ret) + count = ret; + + pm_runtime_mark_last_busy(bdi->dev); + pm_runtime_put_autosuspend(bdi->dev); + + return count; +} +#endif + +static int bq24190_set_otg_vbus(struct bq24190_dev_info *bdi, bool enable) +{ + union power_supply_propval val = { .intval = bdi->charge_type }; + int ret; + + ret = pm_runtime_resume_and_get(bdi->dev); + if (ret < 0) { + dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", ret); + return ret; + } + + bdi->otg_vbus_enabled = enable; + if (enable) + ret = bq24190_write_mask(bdi, BQ24190_REG_POC, + BQ24190_REG_POC_CHG_CONFIG_MASK, + BQ24190_REG_POC_CHG_CONFIG_SHIFT, + BQ24190_REG_POC_CHG_CONFIG_OTG); + else + ret = bq24190_charger_set_charge_type(bdi, &val); + + pm_runtime_mark_last_busy(bdi->dev); + pm_runtime_put_autosuspend(bdi->dev); + + return ret; +} + +#ifdef CONFIG_REGULATOR +static int bq24190_vbus_enable(struct regulator_dev *dev) +{ + return bq24190_set_otg_vbus(rdev_get_drvdata(dev), true); +} + +static int bq24190_vbus_disable(struct regulator_dev *dev) +{ + return bq24190_set_otg_vbus(rdev_get_drvdata(dev), false); +} + +static int bq24190_vbus_is_enabled(struct regulator_dev *dev) +{ + struct bq24190_dev_info *bdi = rdev_get_drvdata(dev); + int ret; + u8 val; + + ret = pm_runtime_resume_and_get(bdi->dev); + if (ret < 0) { + dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", ret); + return ret; + } + + ret = bq24190_read_mask(bdi, BQ24190_REG_POC, + BQ24190_REG_POC_CHG_CONFIG_MASK, + BQ24190_REG_POC_CHG_CONFIG_SHIFT, &val); + + pm_runtime_mark_last_busy(bdi->dev); + pm_runtime_put_autosuspend(bdi->dev); + + if (ret) + return ret; + + bdi->otg_vbus_enabled = (val == BQ24190_REG_POC_CHG_CONFIG_OTG || + val == BQ24190_REG_POC_CHG_CONFIG_OTG_ALT); + return bdi->otg_vbus_enabled; +} + +static const struct regulator_ops bq24190_vbus_ops = { + .enable = bq24190_vbus_enable, + .disable = bq24190_vbus_disable, + .is_enabled = bq24190_vbus_is_enabled, +}; + +static const struct regulator_desc bq24190_vbus_desc = { + .name = "usb_otg_vbus", + .of_match = "usb-otg-vbus", + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .ops = &bq24190_vbus_ops, + .fixed_uV = 5000000, + .n_voltages = 1, +}; + +static const struct regulator_init_data bq24190_vbus_init_data = { + .constraints = { + .valid_ops_mask = REGULATOR_CHANGE_STATUS, + }, +}; + +static int bq24190_register_vbus_regulator(struct bq24190_dev_info *bdi) +{ + struct bq24190_platform_data *pdata = bdi->dev->platform_data; + struct regulator_config cfg = { }; + struct regulator_dev *reg; + int ret = 0; + + cfg.dev = bdi->dev; + if (pdata && pdata->regulator_init_data) + cfg.init_data = pdata->regulator_init_data; + else + cfg.init_data = &bq24190_vbus_init_data; + cfg.driver_data = bdi; + reg = devm_regulator_register(bdi->dev, &bq24190_vbus_desc, &cfg); + if (IS_ERR(reg)) { + ret = PTR_ERR(reg); + dev_err(bdi->dev, "Can't register regulator: %d\n", ret); + } + + return ret; +} +#else +static int bq24190_register_vbus_regulator(struct bq24190_dev_info *bdi) +{ + return 0; +} +#endif + +static int bq24190_set_config(struct bq24190_dev_info *bdi) +{ + int ret; + u8 v; + + ret = bq24190_read(bdi, BQ24190_REG_CTTC, &v); + if (ret < 0) + return ret; + + bdi->watchdog = ((v & BQ24190_REG_CTTC_WATCHDOG_MASK) >> + BQ24190_REG_CTTC_WATCHDOG_SHIFT); + + /* + * According to the "Host Mode and default Mode" section of the + * manual, a write to any register causes the bq24190 to switch + * from default mode to host mode. It will switch back to default + * mode after a WDT timeout unless the WDT is turned off as well. + * So, by simply turning off the WDT, we accomplish both with the + * same write. + */ + v &= ~BQ24190_REG_CTTC_WATCHDOG_MASK; + + ret = bq24190_write(bdi, BQ24190_REG_CTTC, v); + if (ret < 0) + return ret; + + if (bdi->sys_min) { + v = bdi->sys_min / 100 - 30; // manual section 9.5.1.2, table 9 + ret = bq24190_write_mask(bdi, BQ24190_REG_POC, + BQ24190_REG_POC_SYS_MIN_MASK, + BQ24190_REG_POC_SYS_MIN_SHIFT, + v); + if (ret < 0) + return ret; + } + + if (bdi->iprechg) { + v = bdi->iprechg / 128 - 1; // manual section 9.5.1.4, table 11 + ret = bq24190_write_mask(bdi, BQ24190_REG_PCTCC, + BQ24190_REG_PCTCC_IPRECHG_MASK, + BQ24190_REG_PCTCC_IPRECHG_SHIFT, + v); + if (ret < 0) + return ret; + } + + if (bdi->iterm) { + v = bdi->iterm / 128 - 1; // manual section 9.5.1.4, table 11 + ret = bq24190_write_mask(bdi, BQ24190_REG_PCTCC, + BQ24190_REG_PCTCC_ITERM_MASK, + BQ24190_REG_PCTCC_ITERM_SHIFT, + v); + if (ret < 0) + return ret; + } + + if (bdi->ichg) { + ret = bq24190_set_field_val(bdi, BQ24190_REG_CCC, + BQ24190_REG_CCC_ICHG_MASK, + BQ24190_REG_CCC_ICHG_SHIFT, + bq24190_ccc_ichg_values, + ARRAY_SIZE(bq24190_ccc_ichg_values), + bdi->ichg); + if (ret < 0) + return ret; + } + + if (bdi->vreg) { + ret = bq24190_set_field_val(bdi, BQ24190_REG_CVC, + BQ24190_REG_CVC_VREG_MASK, + BQ24190_REG_CVC_VREG_SHIFT, + bq24190_cvc_vreg_values, + ARRAY_SIZE(bq24190_cvc_vreg_values), + bdi->vreg); + if (ret < 0) + return ret; + } + + return 0; +} + +static int bq24190_register_reset(struct bq24190_dev_info *bdi) +{ + int ret, limit = 100; + u8 v; + + /* + * This prop. can be passed on device instantiation from platform code: + * struct property_entry pe[] = + * { PROPERTY_ENTRY_BOOL("disable-reset"), ... }; + * struct i2c_board_info bi = + * { .type = "bq24190", .addr = 0x6b, .properties = pe, .irq = irq }; + * struct i2c_adapter ad = { ... }; + * i2c_add_adapter(&ad); + * i2c_new_client_device(&ad, &bi); + */ + if (device_property_read_bool(bdi->dev, "disable-reset")) + return 0; + + /* Reset the registers */ + ret = bq24190_write_mask(bdi, BQ24190_REG_POC, + BQ24190_REG_POC_RESET_MASK, + BQ24190_REG_POC_RESET_SHIFT, + 0x1); + if (ret < 0) + return ret; + + /* Reset bit will be cleared by hardware so poll until it is */ + do { + ret = bq24190_read_mask(bdi, BQ24190_REG_POC, + BQ24190_REG_POC_RESET_MASK, + BQ24190_REG_POC_RESET_SHIFT, + &v); + if (ret < 0) + return ret; + + if (v == 0) + return 0; + + usleep_range(100, 200); + } while (--limit); + + return -EIO; +} + +/* Charger power supply property routines */ + +static int bq24190_charger_get_charge_type(struct bq24190_dev_info *bdi, + union power_supply_propval *val) +{ + u8 v; + int type, ret; + + ret = bq24190_read_mask(bdi, BQ24190_REG_POC, + BQ24190_REG_POC_CHG_CONFIG_MASK, + BQ24190_REG_POC_CHG_CONFIG_SHIFT, + &v); + if (ret < 0) + return ret; + + /* If POC[CHG_CONFIG] (REG01[5:4]) == 0, charge is disabled */ + if (!v) { + type = POWER_SUPPLY_CHARGE_TYPE_NONE; + } else { + ret = bq24190_read_mask(bdi, BQ24190_REG_CCC, + BQ24190_REG_CCC_FORCE_20PCT_MASK, + BQ24190_REG_CCC_FORCE_20PCT_SHIFT, + &v); + if (ret < 0) + return ret; + + type = (v) ? POWER_SUPPLY_CHARGE_TYPE_TRICKLE : + POWER_SUPPLY_CHARGE_TYPE_FAST; + } + + val->intval = type; + + return 0; +} + +static int bq24190_charger_set_charge_type(struct bq24190_dev_info *bdi, + const union power_supply_propval *val) +{ + u8 chg_config, force_20pct, en_term; + int ret; + + /* + * According to the "Termination when REG02[0] = 1" section of + * the bq24190 manual, the trickle charge could be less than the + * termination current so it recommends turning off the termination + * function. + * + * Note: AFAICT from the datasheet, the user will have to manually + * turn off the charging when in 20% mode. If its not turned off, + * there could be battery damage. So, use this mode at your own risk. + */ + switch (val->intval) { + case POWER_SUPPLY_CHARGE_TYPE_NONE: + chg_config = 0x0; + break; + case POWER_SUPPLY_CHARGE_TYPE_TRICKLE: + chg_config = 0x1; + force_20pct = 0x1; + en_term = 0x0; + break; + case POWER_SUPPLY_CHARGE_TYPE_FAST: + chg_config = 0x1; + force_20pct = 0x0; + en_term = 0x1; + break; + default: + return -EINVAL; + } + + bdi->charge_type = val->intval; + /* + * If the 5V Vbus boost regulator is enabled delay setting + * the charge-type until its gets disabled. + */ + if (bdi->otg_vbus_enabled) + return 0; + + if (chg_config) { /* Enabling the charger */ + ret = bq24190_write_mask(bdi, BQ24190_REG_CCC, + BQ24190_REG_CCC_FORCE_20PCT_MASK, + BQ24190_REG_CCC_FORCE_20PCT_SHIFT, + force_20pct); + if (ret < 0) + return ret; + + ret = bq24190_write_mask(bdi, BQ24190_REG_CTTC, + BQ24190_REG_CTTC_EN_TERM_MASK, + BQ24190_REG_CTTC_EN_TERM_SHIFT, + en_term); + if (ret < 0) + return ret; + } + + return bq24190_write_mask(bdi, BQ24190_REG_POC, + BQ24190_REG_POC_CHG_CONFIG_MASK, + BQ24190_REG_POC_CHG_CONFIG_SHIFT, chg_config); +} + +static int bq24190_charger_get_health(struct bq24190_dev_info *bdi, + union power_supply_propval *val) +{ + u8 v; + int health; + + mutex_lock(&bdi->f_reg_lock); + v = bdi->f_reg; + mutex_unlock(&bdi->f_reg_lock); + + if (v & BQ24190_REG_F_NTC_FAULT_MASK) { + switch (v >> BQ24190_REG_F_NTC_FAULT_SHIFT & 0x7) { + case 0x1: /* TS1 Cold */ + case 0x3: /* TS2 Cold */ + case 0x5: /* Both Cold */ + health = POWER_SUPPLY_HEALTH_COLD; + break; + case 0x2: /* TS1 Hot */ + case 0x4: /* TS2 Hot */ + case 0x6: /* Both Hot */ + health = POWER_SUPPLY_HEALTH_OVERHEAT; + break; + default: + health = POWER_SUPPLY_HEALTH_UNKNOWN; + } + } else if (v & BQ24190_REG_F_BAT_FAULT_MASK) { + health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; + } else if (v & BQ24190_REG_F_CHRG_FAULT_MASK) { + switch (v >> BQ24190_REG_F_CHRG_FAULT_SHIFT & 0x3) { + case 0x1: /* Input Fault (VBUS OVP or VBAT<VBUS<3.8V) */ + /* + * This could be over-voltage or under-voltage + * and there's no way to tell which. Instead + * of looking foolish and returning 'OVERVOLTAGE' + * when its really under-voltage, just return + * 'UNSPEC_FAILURE'. + */ + health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; + break; + case 0x2: /* Thermal Shutdown */ + health = POWER_SUPPLY_HEALTH_OVERHEAT; + break; + case 0x3: /* Charge Safety Timer Expiration */ + health = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE; + break; + default: /* prevent compiler warning */ + health = -1; + } + } else if (v & BQ24190_REG_F_BOOST_FAULT_MASK) { + /* + * This could be over-current or over-voltage but there's + * no way to tell which. Return 'OVERVOLTAGE' since there + * isn't an 'OVERCURRENT' value defined that we can return + * even if it was over-current. + */ + health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; + } else { + health = POWER_SUPPLY_HEALTH_GOOD; + } + + val->intval = health; + + return 0; +} + +static int bq24190_charger_get_online(struct bq24190_dev_info *bdi, + union power_supply_propval *val) +{ + u8 pg_stat, batfet_disable; + int ret; + + ret = bq24190_read_mask(bdi, BQ24190_REG_SS, + BQ24190_REG_SS_PG_STAT_MASK, + BQ24190_REG_SS_PG_STAT_SHIFT, &pg_stat); + if (ret < 0) + return ret; + + ret = bq24190_read_mask(bdi, BQ24190_REG_MOC, + BQ24190_REG_MOC_BATFET_DISABLE_MASK, + BQ24190_REG_MOC_BATFET_DISABLE_SHIFT, &batfet_disable); + if (ret < 0) + return ret; + + val->intval = pg_stat && !batfet_disable; + + return 0; +} + +static int bq24190_battery_set_online(struct bq24190_dev_info *bdi, + const union power_supply_propval *val); +static int bq24190_battery_get_status(struct bq24190_dev_info *bdi, + union power_supply_propval *val); +static int bq24190_battery_get_temp_alert_max(struct bq24190_dev_info *bdi, + union power_supply_propval *val); +static int bq24190_battery_set_temp_alert_max(struct bq24190_dev_info *bdi, + const union power_supply_propval *val); + +static int bq24190_charger_set_online(struct bq24190_dev_info *bdi, + const union power_supply_propval *val) +{ + return bq24190_battery_set_online(bdi, val); +} + +static int bq24190_charger_get_status(struct bq24190_dev_info *bdi, + union power_supply_propval *val) +{ + return bq24190_battery_get_status(bdi, val); +} + +static int bq24190_charger_get_temp_alert_max(struct bq24190_dev_info *bdi, + union power_supply_propval *val) +{ + return bq24190_battery_get_temp_alert_max(bdi, val); +} + +static int bq24190_charger_set_temp_alert_max(struct bq24190_dev_info *bdi, + const union power_supply_propval *val) +{ + return bq24190_battery_set_temp_alert_max(bdi, val); +} + +static int bq24190_charger_get_precharge(struct bq24190_dev_info *bdi, + union power_supply_propval *val) +{ + u8 v; + int ret; + + ret = bq24190_read_mask(bdi, BQ24190_REG_PCTCC, + BQ24190_REG_PCTCC_IPRECHG_MASK, + BQ24190_REG_PCTCC_IPRECHG_SHIFT, &v); + if (ret < 0) + return ret; + + val->intval = ++v * 128 * 1000; + return 0; +} + +static int bq24190_charger_get_charge_term(struct bq24190_dev_info *bdi, + union power_supply_propval *val) +{ + u8 v; + int ret; + + ret = bq24190_read_mask(bdi, BQ24190_REG_PCTCC, + BQ24190_REG_PCTCC_ITERM_MASK, + BQ24190_REG_PCTCC_ITERM_SHIFT, &v); + if (ret < 0) + return ret; + + val->intval = ++v * 128 * 1000; + return 0; +} + +static int bq24190_charger_get_current(struct bq24190_dev_info *bdi, + union power_supply_propval *val) +{ + u8 v; + int curr, ret; + + ret = bq24190_get_field_val(bdi, BQ24190_REG_CCC, + BQ24190_REG_CCC_ICHG_MASK, BQ24190_REG_CCC_ICHG_SHIFT, + bq24190_ccc_ichg_values, + ARRAY_SIZE(bq24190_ccc_ichg_values), &curr); + if (ret < 0) + return ret; + + ret = bq24190_read_mask(bdi, BQ24190_REG_CCC, + BQ24190_REG_CCC_FORCE_20PCT_MASK, + BQ24190_REG_CCC_FORCE_20PCT_SHIFT, &v); + if (ret < 0) + return ret; + + /* If FORCE_20PCT is enabled, then current is 20% of ICHG value */ + if (v) + curr /= 5; + + val->intval = curr; + return 0; +} + +static int bq24190_charger_set_current(struct bq24190_dev_info *bdi, + const union power_supply_propval *val) +{ + u8 v; + int ret, curr = val->intval; + + ret = bq24190_read_mask(bdi, BQ24190_REG_CCC, + BQ24190_REG_CCC_FORCE_20PCT_MASK, + BQ24190_REG_CCC_FORCE_20PCT_SHIFT, &v); + if (ret < 0) + return ret; + + /* If FORCE_20PCT is enabled, have to multiply value passed in by 5 */ + if (v) + curr *= 5; + + if (curr > bdi->ichg_max) + return -EINVAL; + + ret = bq24190_set_field_val(bdi, BQ24190_REG_CCC, + BQ24190_REG_CCC_ICHG_MASK, BQ24190_REG_CCC_ICHG_SHIFT, + bq24190_ccc_ichg_values, + ARRAY_SIZE(bq24190_ccc_ichg_values), curr); + if (ret < 0) + return ret; + + bdi->ichg = curr; + + return 0; +} + +static int bq24190_charger_get_voltage(struct bq24190_dev_info *bdi, + union power_supply_propval *val) +{ + int voltage, ret; + + ret = bq24190_get_field_val(bdi, BQ24190_REG_CVC, + BQ24190_REG_CVC_VREG_MASK, BQ24190_REG_CVC_VREG_SHIFT, + bq24190_cvc_vreg_values, + ARRAY_SIZE(bq24190_cvc_vreg_values), &voltage); + if (ret < 0) + return ret; + + val->intval = voltage; + return 0; +} + +static int bq24190_charger_set_voltage(struct bq24190_dev_info *bdi, + const union power_supply_propval *val) +{ + int ret; + + if (val->intval > bdi->vreg_max) + return -EINVAL; + + ret = bq24190_set_field_val(bdi, BQ24190_REG_CVC, + BQ24190_REG_CVC_VREG_MASK, BQ24190_REG_CVC_VREG_SHIFT, + bq24190_cvc_vreg_values, + ARRAY_SIZE(bq24190_cvc_vreg_values), val->intval); + if (ret < 0) + return ret; + + bdi->vreg = val->intval; + + return 0; +} + +static int bq24190_charger_get_iinlimit(struct bq24190_dev_info *bdi, + union power_supply_propval *val) +{ + int iinlimit, ret; + + ret = bq24190_get_field_val(bdi, BQ24190_REG_ISC, + BQ24190_REG_ISC_IINLIM_MASK, + BQ24190_REG_ISC_IINLIM_SHIFT, + bq24190_isc_iinlim_values, + ARRAY_SIZE(bq24190_isc_iinlim_values), &iinlimit); + if (ret < 0) + return ret; + + val->intval = iinlimit; + return 0; +} + +static int bq24190_charger_set_iinlimit(struct bq24190_dev_info *bdi, + const union power_supply_propval *val) +{ + return bq24190_set_field_val(bdi, BQ24190_REG_ISC, + BQ24190_REG_ISC_IINLIM_MASK, + BQ24190_REG_ISC_IINLIM_SHIFT, + bq24190_isc_iinlim_values, + ARRAY_SIZE(bq24190_isc_iinlim_values), val->intval); +} + +static int bq24190_charger_get_property(struct power_supply *psy, + enum power_supply_property psp, union power_supply_propval *val) +{ + struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); + int ret; + + dev_dbg(bdi->dev, "prop: %d\n", psp); + + ret = pm_runtime_resume_and_get(bdi->dev); + if (ret < 0) + return ret; + + switch (psp) { + case POWER_SUPPLY_PROP_CHARGE_TYPE: + ret = bq24190_charger_get_charge_type(bdi, val); + break; + case POWER_SUPPLY_PROP_HEALTH: + ret = bq24190_charger_get_health(bdi, val); + break; + case POWER_SUPPLY_PROP_ONLINE: + ret = bq24190_charger_get_online(bdi, val); + break; + case POWER_SUPPLY_PROP_STATUS: + ret = bq24190_charger_get_status(bdi, val); + break; + case POWER_SUPPLY_PROP_TEMP_ALERT_MAX: + ret = bq24190_charger_get_temp_alert_max(bdi, val); + break; + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + ret = bq24190_charger_get_precharge(bdi, val); + break; + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + ret = bq24190_charger_get_charge_term(bdi, val); + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + ret = bq24190_charger_get_current(bdi, val); + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + val->intval = bdi->ichg_max; + ret = 0; + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + ret = bq24190_charger_get_voltage(bdi, val); + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + val->intval = bdi->vreg_max; + ret = 0; + break; + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + ret = bq24190_charger_get_iinlimit(bdi, val); + break; + case POWER_SUPPLY_PROP_SCOPE: + val->intval = POWER_SUPPLY_SCOPE_SYSTEM; + ret = 0; + break; + case POWER_SUPPLY_PROP_MODEL_NAME: + val->strval = bdi->model_name; + ret = 0; + break; + case POWER_SUPPLY_PROP_MANUFACTURER: + val->strval = BQ24190_MANUFACTURER; + ret = 0; + break; + default: + ret = -ENODATA; + } + + pm_runtime_mark_last_busy(bdi->dev); + pm_runtime_put_autosuspend(bdi->dev); + + return ret; +} + +static int bq24190_charger_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); + int ret; + + dev_dbg(bdi->dev, "prop: %d\n", psp); + + ret = pm_runtime_resume_and_get(bdi->dev); + if (ret < 0) + return ret; + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + ret = bq24190_charger_set_online(bdi, val); + break; + case POWER_SUPPLY_PROP_TEMP_ALERT_MAX: + ret = bq24190_charger_set_temp_alert_max(bdi, val); + break; + case POWER_SUPPLY_PROP_CHARGE_TYPE: + ret = bq24190_charger_set_charge_type(bdi, val); + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + ret = bq24190_charger_set_current(bdi, val); + break; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + ret = bq24190_charger_set_voltage(bdi, val); + break; + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + ret = bq24190_charger_set_iinlimit(bdi, val); + break; + default: + ret = -EINVAL; + } + + pm_runtime_mark_last_busy(bdi->dev); + pm_runtime_put_autosuspend(bdi->dev); + + return ret; +} + +static int bq24190_charger_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + case POWER_SUPPLY_PROP_TEMP_ALERT_MAX: + case POWER_SUPPLY_PROP_CHARGE_TYPE: + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + return 1; + default: + return 0; + } +} + +static void bq24190_input_current_limit_work(struct work_struct *work) +{ + struct bq24190_dev_info *bdi = + container_of(work, struct bq24190_dev_info, + input_current_limit_work.work); + union power_supply_propval val; + int ret; + + ret = power_supply_get_property_from_supplier(bdi->charger, + POWER_SUPPLY_PROP_CURRENT_MAX, + &val); + if (ret) + return; + + bq24190_charger_set_property(bdi->charger, + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, + &val); + power_supply_changed(bdi->charger); +} + +/* Sync the input-current-limit with our parent supply (if we have one) */ +static void bq24190_charger_external_power_changed(struct power_supply *psy) +{ + struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); + + /* + * The Power-Good detection may take up to 220ms, sometimes + * the external charger detection is quicker, and the bq24190 will + * reset to iinlim based on its own charger detection (which is not + * hooked up when using external charger detection) resulting in a + * too low default 500mA iinlim. Delay setting the input-current-limit + * for 300ms to avoid this. + */ + queue_delayed_work(system_wq, &bdi->input_current_limit_work, + msecs_to_jiffies(300)); +} + +static enum power_supply_property bq24190_charger_properties[] = { + POWER_SUPPLY_PROP_CHARGE_TYPE, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_TEMP_ALERT_MAX, + POWER_SUPPLY_PROP_PRECHARGE_CURRENT, + POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, + POWER_SUPPLY_PROP_SCOPE, + POWER_SUPPLY_PROP_MODEL_NAME, + POWER_SUPPLY_PROP_MANUFACTURER, +}; + +static char *bq24190_charger_supplied_to[] = { + "main-battery", +}; + +static const struct power_supply_desc bq24190_charger_desc = { + .name = "bq24190-charger", + .type = POWER_SUPPLY_TYPE_USB, + .properties = bq24190_charger_properties, + .num_properties = ARRAY_SIZE(bq24190_charger_properties), + .get_property = bq24190_charger_get_property, + .set_property = bq24190_charger_set_property, + .property_is_writeable = bq24190_charger_property_is_writeable, + .external_power_changed = bq24190_charger_external_power_changed, +}; + +/* Battery power supply property routines */ + +static int bq24190_battery_get_status(struct bq24190_dev_info *bdi, + union power_supply_propval *val) +{ + u8 ss_reg, chrg_fault; + int status, ret; + + mutex_lock(&bdi->f_reg_lock); + chrg_fault = bdi->f_reg; + mutex_unlock(&bdi->f_reg_lock); + + chrg_fault &= BQ24190_REG_F_CHRG_FAULT_MASK; + chrg_fault >>= BQ24190_REG_F_CHRG_FAULT_SHIFT; + + ret = bq24190_read(bdi, BQ24190_REG_SS, &ss_reg); + if (ret < 0) + return ret; + + /* + * The battery must be discharging when any of these are true: + * - there is no good power source; + * - there is a charge fault. + * Could also be discharging when in "supplement mode" but + * there is no way to tell when its in that mode. + */ + if (!(ss_reg & BQ24190_REG_SS_PG_STAT_MASK) || chrg_fault) { + status = POWER_SUPPLY_STATUS_DISCHARGING; + } else { + ss_reg &= BQ24190_REG_SS_CHRG_STAT_MASK; + ss_reg >>= BQ24190_REG_SS_CHRG_STAT_SHIFT; + + switch (ss_reg) { + case 0x0: /* Not Charging */ + status = POWER_SUPPLY_STATUS_NOT_CHARGING; + break; + case 0x1: /* Pre-charge */ + case 0x2: /* Fast Charging */ + status = POWER_SUPPLY_STATUS_CHARGING; + break; + case 0x3: /* Charge Termination Done */ + status = POWER_SUPPLY_STATUS_FULL; + break; + default: + ret = -EIO; + } + } + + if (!ret) + val->intval = status; + + return ret; +} + +static int bq24190_battery_get_health(struct bq24190_dev_info *bdi, + union power_supply_propval *val) +{ + u8 v; + int health; + + mutex_lock(&bdi->f_reg_lock); + v = bdi->f_reg; + mutex_unlock(&bdi->f_reg_lock); + + if (v & BQ24190_REG_F_BAT_FAULT_MASK) { + health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; + } else { + v &= BQ24190_REG_F_NTC_FAULT_MASK; + v >>= BQ24190_REG_F_NTC_FAULT_SHIFT; + + switch (v) { + case 0x0: /* Normal */ + health = POWER_SUPPLY_HEALTH_GOOD; + break; + case 0x1: /* TS1 Cold */ + case 0x3: /* TS2 Cold */ + case 0x5: /* Both Cold */ + health = POWER_SUPPLY_HEALTH_COLD; + break; + case 0x2: /* TS1 Hot */ + case 0x4: /* TS2 Hot */ + case 0x6: /* Both Hot */ + health = POWER_SUPPLY_HEALTH_OVERHEAT; + break; + default: + health = POWER_SUPPLY_HEALTH_UNKNOWN; + } + } + + val->intval = health; + return 0; +} + +static int bq24190_battery_get_online(struct bq24190_dev_info *bdi, + union power_supply_propval *val) +{ + u8 batfet_disable; + int ret; + + ret = bq24190_read_mask(bdi, BQ24190_REG_MOC, + BQ24190_REG_MOC_BATFET_DISABLE_MASK, + BQ24190_REG_MOC_BATFET_DISABLE_SHIFT, &batfet_disable); + if (ret < 0) + return ret; + + val->intval = !batfet_disable; + return 0; +} + +static int bq24190_battery_set_online(struct bq24190_dev_info *bdi, + const union power_supply_propval *val) +{ + return bq24190_write_mask(bdi, BQ24190_REG_MOC, + BQ24190_REG_MOC_BATFET_DISABLE_MASK, + BQ24190_REG_MOC_BATFET_DISABLE_SHIFT, !val->intval); +} + +static int bq24190_battery_get_temp_alert_max(struct bq24190_dev_info *bdi, + union power_supply_propval *val) +{ + int temp, ret; + + ret = bq24190_get_field_val(bdi, BQ24190_REG_ICTRC, + BQ24190_REG_ICTRC_TREG_MASK, + BQ24190_REG_ICTRC_TREG_SHIFT, + bq24190_ictrc_treg_values, + ARRAY_SIZE(bq24190_ictrc_treg_values), &temp); + if (ret < 0) + return ret; + + val->intval = temp; + return 0; +} + +static int bq24190_battery_set_temp_alert_max(struct bq24190_dev_info *bdi, + const union power_supply_propval *val) +{ + return bq24190_set_field_val(bdi, BQ24190_REG_ICTRC, + BQ24190_REG_ICTRC_TREG_MASK, + BQ24190_REG_ICTRC_TREG_SHIFT, + bq24190_ictrc_treg_values, + ARRAY_SIZE(bq24190_ictrc_treg_values), val->intval); +} + +static int bq24190_battery_get_property(struct power_supply *psy, + enum power_supply_property psp, union power_supply_propval *val) +{ + struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); + int ret; + + dev_warn(bdi->dev, "warning: /sys/class/power_supply/bq24190-battery is deprecated\n"); + dev_dbg(bdi->dev, "prop: %d\n", psp); + + ret = pm_runtime_resume_and_get(bdi->dev); + if (ret < 0) + return ret; + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + ret = bq24190_battery_get_status(bdi, val); + break; + case POWER_SUPPLY_PROP_HEALTH: + ret = bq24190_battery_get_health(bdi, val); + break; + case POWER_SUPPLY_PROP_ONLINE: + ret = bq24190_battery_get_online(bdi, val); + break; + case POWER_SUPPLY_PROP_TECHNOLOGY: + /* Could be Li-on or Li-polymer but no way to tell which */ + val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN; + ret = 0; + break; + case POWER_SUPPLY_PROP_TEMP_ALERT_MAX: + ret = bq24190_battery_get_temp_alert_max(bdi, val); + break; + case POWER_SUPPLY_PROP_SCOPE: + val->intval = POWER_SUPPLY_SCOPE_SYSTEM; + ret = 0; + break; + default: + ret = -ENODATA; + } + + pm_runtime_mark_last_busy(bdi->dev); + pm_runtime_put_autosuspend(bdi->dev); + + return ret; +} + +static int bq24190_battery_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy); + int ret; + + dev_warn(bdi->dev, "warning: /sys/class/power_supply/bq24190-battery is deprecated\n"); + dev_dbg(bdi->dev, "prop: %d\n", psp); + + ret = pm_runtime_resume_and_get(bdi->dev); + if (ret < 0) + return ret; + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + ret = bq24190_battery_set_online(bdi, val); + break; + case POWER_SUPPLY_PROP_TEMP_ALERT_MAX: + ret = bq24190_battery_set_temp_alert_max(bdi, val); + break; + default: + ret = -EINVAL; + } + + pm_runtime_mark_last_busy(bdi->dev); + pm_runtime_put_autosuspend(bdi->dev); + + return ret; +} + +static int bq24190_battery_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + int ret; + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + case POWER_SUPPLY_PROP_TEMP_ALERT_MAX: + ret = 1; + break; + default: + ret = 0; + } + + return ret; +} + +static enum power_supply_property bq24190_battery_properties[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_TECHNOLOGY, + POWER_SUPPLY_PROP_TEMP_ALERT_MAX, + POWER_SUPPLY_PROP_SCOPE, +}; + +static const struct power_supply_desc bq24190_battery_desc = { + .name = "bq24190-battery", + .type = POWER_SUPPLY_TYPE_BATTERY, + .properties = bq24190_battery_properties, + .num_properties = ARRAY_SIZE(bq24190_battery_properties), + .get_property = bq24190_battery_get_property, + .set_property = bq24190_battery_set_property, + .property_is_writeable = bq24190_battery_property_is_writeable, +}; + +static int bq24190_configure_usb_otg(struct bq24190_dev_info *bdi, u8 ss_reg) +{ + bool otg_enabled; + int ret; + + otg_enabled = !!(ss_reg & BQ24190_REG_SS_VBUS_STAT_MASK); + ret = extcon_set_state_sync(bdi->edev, EXTCON_USB, otg_enabled); + if (ret < 0) + dev_err(bdi->dev, "Can't set extcon state to %d: %d\n", + otg_enabled, ret); + + return ret; +} + +static void bq24190_check_status(struct bq24190_dev_info *bdi) +{ + const u8 battery_mask_ss = BQ24190_REG_SS_CHRG_STAT_MASK; + const u8 battery_mask_f = BQ24190_REG_F_BAT_FAULT_MASK + | BQ24190_REG_F_NTC_FAULT_MASK; + bool alert_charger = false, alert_battery = false; + u8 ss_reg = 0, f_reg = 0; + int i, ret; + + ret = bq24190_read(bdi, BQ24190_REG_SS, &ss_reg); + if (ret < 0) { + dev_err(bdi->dev, "Can't read SS reg: %d\n", ret); + return; + } + + i = 0; + do { + ret = bq24190_read(bdi, BQ24190_REG_F, &f_reg); + if (ret < 0) { + dev_err(bdi->dev, "Can't read F reg: %d\n", ret); + return; + } + } while (f_reg && ++i < 2); + + /* ignore over/under voltage fault after disconnect */ + if (f_reg == (1 << BQ24190_REG_F_CHRG_FAULT_SHIFT) && + !(ss_reg & BQ24190_REG_SS_PG_STAT_MASK)) + f_reg = 0; + + if (f_reg != bdi->f_reg) { + dev_warn(bdi->dev, + "Fault: boost %d, charge %d, battery %d, ntc %d\n", + !!(f_reg & BQ24190_REG_F_BOOST_FAULT_MASK), + !!(f_reg & BQ24190_REG_F_CHRG_FAULT_MASK), + !!(f_reg & BQ24190_REG_F_BAT_FAULT_MASK), + !!(f_reg & BQ24190_REG_F_NTC_FAULT_MASK)); + + mutex_lock(&bdi->f_reg_lock); + if ((bdi->f_reg & battery_mask_f) != (f_reg & battery_mask_f)) + alert_battery = true; + if ((bdi->f_reg & ~battery_mask_f) != (f_reg & ~battery_mask_f)) + alert_charger = true; + bdi->f_reg = f_reg; + mutex_unlock(&bdi->f_reg_lock); + } + + if (ss_reg != bdi->ss_reg) { + /* + * The device is in host mode so when PG_STAT goes from 1->0 + * (i.e., power removed) HIZ needs to be disabled. + */ + if ((bdi->ss_reg & BQ24190_REG_SS_PG_STAT_MASK) && + !(ss_reg & BQ24190_REG_SS_PG_STAT_MASK)) { + ret = bq24190_write_mask(bdi, BQ24190_REG_ISC, + BQ24190_REG_ISC_EN_HIZ_MASK, + BQ24190_REG_ISC_EN_HIZ_SHIFT, + 0); + if (ret < 0) + dev_err(bdi->dev, "Can't access ISC reg: %d\n", + ret); + } + + if ((bdi->ss_reg & battery_mask_ss) != (ss_reg & battery_mask_ss)) + alert_battery = true; + if ((bdi->ss_reg & ~battery_mask_ss) != (ss_reg & ~battery_mask_ss)) + alert_charger = true; + bdi->ss_reg = ss_reg; + } + + if (alert_charger || alert_battery) { + power_supply_changed(bdi->charger); + bq24190_configure_usb_otg(bdi, ss_reg); + } + if (alert_battery && bdi->battery) + power_supply_changed(bdi->battery); + + dev_dbg(bdi->dev, "ss_reg: 0x%02x, f_reg: 0x%02x\n", ss_reg, f_reg); +} + +static irqreturn_t bq24190_irq_handler_thread(int irq, void *data) +{ + struct bq24190_dev_info *bdi = data; + int error; + + bdi->irq_event = true; + error = pm_runtime_resume_and_get(bdi->dev); + if (error < 0) { + dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error); + return IRQ_NONE; + } + bq24190_check_status(bdi); + pm_runtime_mark_last_busy(bdi->dev); + pm_runtime_put_autosuspend(bdi->dev); + bdi->irq_event = false; + + return IRQ_HANDLED; +} + +static int bq24190_hw_init(struct bq24190_dev_info *bdi) +{ + u8 v; + int ret; + + /* First check that the device really is what its supposed to be */ + ret = bq24190_read_mask(bdi, BQ24190_REG_VPRS, + BQ24190_REG_VPRS_PN_MASK, + BQ24190_REG_VPRS_PN_SHIFT, + &v); + if (ret < 0) + return ret; + + switch (v) { + case BQ24190_REG_VPRS_PN_24190: + case BQ24190_REG_VPRS_PN_24192: + case BQ24190_REG_VPRS_PN_24192I: + break; + default: + dev_err(bdi->dev, "Error unknown model: 0x%02x\n", v); + return -ENODEV; + } + + ret = bq24190_register_reset(bdi); + if (ret < 0) + return ret; + + ret = bq24190_set_config(bdi); + if (ret < 0) + return ret; + + return bq24190_read(bdi, BQ24190_REG_SS, &bdi->ss_reg); +} + +static int bq24190_get_config(struct bq24190_dev_info *bdi) +{ + const char * const s = "ti,system-minimum-microvolt"; + struct power_supply_battery_info *info; + int v, idx; + + idx = ARRAY_SIZE(bq24190_ccc_ichg_values) - 1; + bdi->ichg_max = bq24190_ccc_ichg_values[idx]; + + idx = ARRAY_SIZE(bq24190_cvc_vreg_values) - 1; + bdi->vreg_max = bq24190_cvc_vreg_values[idx]; + + if (device_property_read_u32(bdi->dev, s, &v) == 0) { + v /= 1000; + if (v >= BQ24190_REG_POC_SYS_MIN_MIN + && v <= BQ24190_REG_POC_SYS_MIN_MAX) + bdi->sys_min = v; + else + dev_warn(bdi->dev, "invalid value for %s: %u\n", s, v); + } + + if (!power_supply_get_battery_info(bdi->charger, &info)) { + v = info->precharge_current_ua / 1000; + if (v >= BQ24190_REG_PCTCC_IPRECHG_MIN + && v <= BQ24190_REG_PCTCC_IPRECHG_MAX) + bdi->iprechg = v; + else + dev_warn(bdi->dev, "invalid value for battery:precharge-current-microamp: %d\n", + v); + + v = info->charge_term_current_ua / 1000; + if (v >= BQ24190_REG_PCTCC_ITERM_MIN + && v <= BQ24190_REG_PCTCC_ITERM_MAX) + bdi->iterm = v; + else + dev_warn(bdi->dev, "invalid value for battery:charge-term-current-microamp: %d\n", + v); + + /* These are optional, so no warning when not set */ + v = info->constant_charge_current_max_ua; + if (v >= bq24190_ccc_ichg_values[0] && v <= bdi->ichg_max) + bdi->ichg = bdi->ichg_max = v; + + v = info->constant_charge_voltage_max_uv; + if (v >= bq24190_cvc_vreg_values[0] && v <= bdi->vreg_max) + bdi->vreg = bdi->vreg_max = v; + } + + return 0; +} + +static int bq24190_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct i2c_adapter *adapter = client->adapter; + struct device *dev = &client->dev; + struct power_supply_config charger_cfg = {}, battery_cfg = {}; + struct bq24190_dev_info *bdi; + int ret; + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { + dev_err(dev, "No support for SMBUS_BYTE_DATA\n"); + return -ENODEV; + } + + bdi = devm_kzalloc(dev, sizeof(*bdi), GFP_KERNEL); + if (!bdi) { + dev_err(dev, "Can't alloc bdi struct\n"); + return -ENOMEM; + } + + bdi->client = client; + bdi->dev = dev; + strncpy(bdi->model_name, id->name, I2C_NAME_SIZE); + mutex_init(&bdi->f_reg_lock); + bdi->charge_type = POWER_SUPPLY_CHARGE_TYPE_FAST; + bdi->f_reg = 0; + bdi->ss_reg = BQ24190_REG_SS_VBUS_STAT_MASK; /* impossible state */ + INIT_DELAYED_WORK(&bdi->input_current_limit_work, + bq24190_input_current_limit_work); + + i2c_set_clientdata(client, bdi); + + if (client->irq <= 0) { + dev_err(dev, "Can't get irq info\n"); + return -EINVAL; + } + + bdi->edev = devm_extcon_dev_allocate(dev, bq24190_usb_extcon_cable); + if (IS_ERR(bdi->edev)) + return PTR_ERR(bdi->edev); + + ret = devm_extcon_dev_register(dev, bdi->edev); + if (ret < 0) + return ret; + + pm_runtime_enable(dev); + pm_runtime_use_autosuspend(dev); + pm_runtime_set_autosuspend_delay(dev, 600); + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + dev_err(dev, "pm_runtime_get failed: %i\n", ret); + goto out_pmrt; + } + +#ifdef CONFIG_SYSFS + bq24190_sysfs_init_attrs(); + charger_cfg.attr_grp = bq24190_sysfs_groups; +#endif + + charger_cfg.drv_data = bdi; + charger_cfg.of_node = dev->of_node; + charger_cfg.supplied_to = bq24190_charger_supplied_to; + charger_cfg.num_supplicants = ARRAY_SIZE(bq24190_charger_supplied_to); + bdi->charger = power_supply_register(dev, &bq24190_charger_desc, + &charger_cfg); + if (IS_ERR(bdi->charger)) { + dev_err(dev, "Can't register charger\n"); + ret = PTR_ERR(bdi->charger); + goto out_pmrt; + } + + /* the battery class is deprecated and will be removed. */ + /* in the interim, this property hides it. */ + if (!device_property_read_bool(dev, "omit-battery-class")) { + battery_cfg.drv_data = bdi; + bdi->battery = power_supply_register(dev, &bq24190_battery_desc, + &battery_cfg); + if (IS_ERR(bdi->battery)) { + dev_err(dev, "Can't register battery\n"); + ret = PTR_ERR(bdi->battery); + goto out_charger; + } + } + + ret = bq24190_get_config(bdi); + if (ret < 0) { + dev_err(dev, "Can't get devicetree config\n"); + goto out_charger; + } + + ret = bq24190_hw_init(bdi); + if (ret < 0) { + dev_err(dev, "Hardware init failed\n"); + goto out_charger; + } + + ret = bq24190_configure_usb_otg(bdi, bdi->ss_reg); + if (ret < 0) + goto out_charger; + + bdi->initialized = true; + + ret = devm_request_threaded_irq(dev, client->irq, NULL, + bq24190_irq_handler_thread, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, + "bq24190-charger", bdi); + if (ret < 0) { + dev_err(dev, "Can't set up irq handler\n"); + goto out_charger; + } + + ret = bq24190_register_vbus_regulator(bdi); + if (ret < 0) + goto out_charger; + + enable_irq_wake(client->irq); + + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + return 0; + +out_charger: + if (!IS_ERR_OR_NULL(bdi->battery)) + power_supply_unregister(bdi->battery); + power_supply_unregister(bdi->charger); + +out_pmrt: + pm_runtime_put_sync(dev); + pm_runtime_dont_use_autosuspend(dev); + pm_runtime_disable(dev); + return ret; +} + +static void bq24190_remove(struct i2c_client *client) +{ + struct bq24190_dev_info *bdi = i2c_get_clientdata(client); + int error; + + cancel_delayed_work_sync(&bdi->input_current_limit_work); + error = pm_runtime_resume_and_get(bdi->dev); + if (error < 0) + dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error); + + bq24190_register_reset(bdi); + if (bdi->battery) + power_supply_unregister(bdi->battery); + power_supply_unregister(bdi->charger); + if (error >= 0) + pm_runtime_put_sync(bdi->dev); + pm_runtime_dont_use_autosuspend(bdi->dev); + pm_runtime_disable(bdi->dev); +} + +static void bq24190_shutdown(struct i2c_client *client) +{ + struct bq24190_dev_info *bdi = i2c_get_clientdata(client); + + /* Turn off 5V boost regulator on shutdown */ + bq24190_set_otg_vbus(bdi, false); +} + +static __maybe_unused int bq24190_runtime_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct bq24190_dev_info *bdi = i2c_get_clientdata(client); + + if (!bdi->initialized) + return 0; + + dev_dbg(bdi->dev, "%s\n", __func__); + + return 0; +} + +static __maybe_unused int bq24190_runtime_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct bq24190_dev_info *bdi = i2c_get_clientdata(client); + + if (!bdi->initialized) + return 0; + + if (!bdi->irq_event) { + dev_dbg(bdi->dev, "checking events on possible wakeirq\n"); + bq24190_check_status(bdi); + } + + return 0; +} + +static __maybe_unused int bq24190_pm_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct bq24190_dev_info *bdi = i2c_get_clientdata(client); + int error; + + error = pm_runtime_resume_and_get(bdi->dev); + if (error < 0) + dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error); + + bq24190_register_reset(bdi); + + if (error >= 0) { + pm_runtime_mark_last_busy(bdi->dev); + pm_runtime_put_autosuspend(bdi->dev); + } + + return 0; +} + +static __maybe_unused int bq24190_pm_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct bq24190_dev_info *bdi = i2c_get_clientdata(client); + int error; + + bdi->f_reg = 0; + bdi->ss_reg = BQ24190_REG_SS_VBUS_STAT_MASK; /* impossible state */ + + error = pm_runtime_resume_and_get(bdi->dev); + if (error < 0) + dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", error); + + bq24190_register_reset(bdi); + bq24190_set_config(bdi); + bq24190_read(bdi, BQ24190_REG_SS, &bdi->ss_reg); + + if (error >= 0) { + pm_runtime_mark_last_busy(bdi->dev); + pm_runtime_put_autosuspend(bdi->dev); + } + + /* Things may have changed while suspended so alert upper layer */ + power_supply_changed(bdi->charger); + if (bdi->battery) + power_supply_changed(bdi->battery); + + return 0; +} + +static const struct dev_pm_ops bq24190_pm_ops = { + SET_RUNTIME_PM_OPS(bq24190_runtime_suspend, bq24190_runtime_resume, + NULL) + SET_SYSTEM_SLEEP_PM_OPS(bq24190_pm_suspend, bq24190_pm_resume) +}; + +static const struct i2c_device_id bq24190_i2c_ids[] = { + { "bq24190" }, + { "bq24192" }, + { "bq24192i" }, + { "bq24196" }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, bq24190_i2c_ids); + +static const struct of_device_id bq24190_of_match[] = { + { .compatible = "ti,bq24190", }, + { .compatible = "ti,bq24192", }, + { .compatible = "ti,bq24192i", }, + { .compatible = "ti,bq24196", }, + { }, +}; +MODULE_DEVICE_TABLE(of, bq24190_of_match); + +static struct i2c_driver bq24190_driver = { + .probe = bq24190_probe, + .remove = bq24190_remove, + .shutdown = bq24190_shutdown, + .id_table = bq24190_i2c_ids, + .driver = { + .name = "bq24190-charger", + .pm = &bq24190_pm_ops, + .of_match_table = bq24190_of_match, + }, +}; +module_i2c_driver(bq24190_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Mark A. Greer <mgreer@animalcreek.com>"); +MODULE_DESCRIPTION("TI BQ24190 Charger Driver"); |